diff --git a/tests/unit/test_backend_selection.py b/tests/unit/test_backend_selection.py
index 05b6581..3d3b85d 100644
--- a/tests/unit/test_backend_selection.py
+++ b/tests/unit/test_backend_selection.py
@@ -409,7 +409,7 @@ class TestIsBackendReady(unittest.TestCase):
 
     def test_ready_when_status_returns_zero(self):
         class _ReadyBackend:
-            def status(self, *, quiet=False):
+            def status(self, *, quiet: bool = False) -> int:
                 return 0
 
         from bot_bottle.backend import is_backend_ready
@@ -418,7 +418,7 @@ class TestIsBackendReady(unittest.TestCase):
 
     def test_not_ready_when_status_nonzero(self):
         class _BrokenBackend:
-            def status(self, *, quiet=False):
+            def status(self, *, quiet: bool = False) -> int:
                 return 1
 
         from bot_bottle.backend import is_backend_ready
@@ -429,7 +429,7 @@ class TestIsBackendReady(unittest.TestCase):
         calls = []
 
         class _SpyBackend:
-            def status(self, *, quiet=False):
+            def status(self, *, quiet: bool = False) -> int:
                 calls.append(quiet)
                 return 0
 
diff --git a/tests/unit/test_backend_setup.py b/tests/unit/test_backend_setup.py
index 12c3ca9..4b616ee 100644
--- a/tests/unit/test_backend_setup.py
+++ b/tests/unit/test_backend_setup.py
@@ -342,8 +342,6 @@ class TestBackendStatusQuiet(unittest.TestCase):
     def test_docker_quiet_true_suppresses_stderr(self):
         import io as _io
         from bot_bottle.backend.docker.backend import DockerBottleBackend
-        written = []
-        real_status = dk.status
 
         def _loud_status():
             import sys